SQL Server全文搜索转义字符？

I am doing a MS SQL Server Full Text Search query. I need to escape special characters so I can search on a specific term that contains special characters. Is there a built-in function to escape a full text search string ? If not, how would you do it ?

我正在进行MS SQL Server全文搜索查询。我需要转义特殊字符，以便我可以搜索包含特殊字符的特定术语。是否有内置函数来转义全文搜索字符串？如果没有，你会怎么做？

1 个解决方案

#1

Bad news: there's no way. Good news: you don't need it (as it won't help anyway).

坏消息：没有办法。好消息：你不需要它（因为它无论如何也无济于事）。

I've faced similar issue on one of my projects. My understanding is that while building full-text index, SQL Server treats all special characters as word delimiters and hence:

我在其中一个项目中遇到过类似的问题。我的理解是，在构建全文索引时，SQL Server将所有特殊字符视为字分隔符，因此：

Your word with such a character is represented as two (or more) words in full-text index.
带有这样一个字符的单词在全文索引中表示为两个（或更多）单词。
These character(s) are stripped away and don't appear in an index.
这些字符被剥离，不会出现在索引中。

Consider we have the following table with a corresponding full-text index for it (which is skipped):

考虑我们有下面的表及其相应的全文索引（跳过）：

CREATE TABLE [dbo].[ActicleTable] 
(
  [Id] int identity(1,1) not null primary key,
  [ActicleBody] varchar(max) not null
);

Consider later we add rows to the table:

稍后我们考虑向表中添加行：

INSERT INTO [ActicleTable] values ('digitally improvements folders')
INSERT INTO [ActicleTable] values ('digital"ly improve{ments} fold(ers)')

Try searching:

尝试搜索：

SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'digitally')
SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'improvements')
SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'folders')

and

和

SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'digital')
SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'improve')
SELECT * FROM [ArticleTable] WHERE CONTAINS(*, 'fold')

First group of conditions will match first row (and not the second) while the second group will match second row only.

第一组条件将匹配第一行（而不是第二行），而第二组仅匹配第二行。

Unfortunately I could not find a link to MSDN (or something) where such behaviour is clearly stated. But I've found an official article that tells how to convert quotation marks for full-text search queries, which is [implicitly] aligned with the above described algorithm.

不幸的是，我找不到MSDN（或其他）的链接，其中明确说明了这种行为。但是我发现了一篇官方文章，讲述了如何为全文搜索查询转换引号，这些查询与上述算法[隐式]对齐。

#1